CN211606045U

CN211606045U - Cable holding and clamping structure

Info

Publication number: CN211606045U
Application number: CN201922335175.9U
Authority: CN
Inventors: 官科顺; 陈俊
Original assignee: Xiamen Qunxin Industry And Trade Co ltd
Current assignee: Xiamen Qunxin Industry And Trade Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-29
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a cable embraces and presss from both sides structure, include: the cable, the clamping piece and the clamping driving piece are connected with each other; the clamping piece is arranged outside the cable along the radial direction of the cable; the clamping piece is provided with a first extrusion surface facing the side surface of the cable and a second extrusion surface far away from the side surface of the cable; the clamping driving piece is provided with an extrusion matching surface matched with the second extrusion surface; when the extrusion matching surface is separated from the second extrusion surface, the clamping piece is in a release position, and the first extrusion surface is in loose fit with the side surface of the cable; when the extrusion matching surface is abutted against the second extrusion surface, the clamping piece is in a contraction position, and the first extrusion surface is in tight fit with the side face of the cable. The cable holding clamp structure is simple in structure, can be repeatedly used and has enough holding clamp force.

Description

Cable holding and clamping structure

Technical Field

The utility model relates to a cable system especially relates to cable fixing device.

Background

Proper wire and cable management in building structures is important for safe and efficient operation of power and cable operations of buildings.

When a wire or cable needs to be protected from potential injury, it can be pulled through various conduits. The conduit can be made of metal, rigid plastic (e.g., PVC), and other materials, and the wires and cables can range from very thin wires (which can be bunched to pass through the conduit) to very thick cables (which do not have to be combined with other wires or cables as they pass through the conduit). For the purposes of this disclosure, the term "cable" or "electrical cable" refers in this disclosure to any type of electrical wire, cable, or similar elongated component that can be inserted and pulled through a conduit.

Because the conduit can be long and bends are provided as required by the building structure, it can be difficult to pull the cable through even a short length of conduit. Traditionally, tools such as electrician's lay wire pull-off (fish tape) have been used to attach to the end of a cable and pull the cable through a conduit. Generally, the wire-laying pull wire is made of a strong and tough material (e.g., steel) to support the pulling load and has a collar at one end to secure the end of the cable. In the case where the cable being pulled is not insulated, or the insulation is stripped off at the end secured to the lay wire pull wire, insulating tape may be applied over the exposed section of the cable. Other methods than using a wireline pull wire, such as pushing or twisting a cable through a conduit, have been attempted but have not been satisfactory.

Unfortunately, the over-the-wire pull wire method and other methods of pulling the cable through the conduit do not always function properly and if the over-the-wire pull wire is detached from the cable during the process of pulling the cable through the conduit, it is difficult to withdraw the inserted cable to restart the entire process. Often in such cases, the conduit must be removed and/or broken to access the end of the cable, which can be expensive and time consuming.

For example, in the technical solution disclosed in taiwan patent TW201923271A, in order to provide a sufficient clamping force, a step-shaped rib needs to be formed on the inner surface of the clamping jaw, which is difficult to process and relatively high in cost. And this scheme needs the jack catch to remove along the axial left-right movement, and two jack catches are easy off-centre dislocation from top to bottom like this, cause hold tight power little, unstable scheduling problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem that a cable is embraced and is pressed from both sides structure is provided, simple structure can used repeatedly and embrace that to press from both sides the power enough big.

In order to solve the technical problem, the utility model provides a cable embraces and presss from both sides structure, include: the cable, the clamping piece and the clamping driving piece are connected with each other;

the clamping piece is arranged outside the cable along the radial direction of the cable; the clamping piece is provided with a first extrusion surface facing the side surface of the cable and a second extrusion surface far away from the side surface of the cable;

the clamping driving piece is provided with an extrusion matching surface matched with the second extrusion surface; when the extrusion matching surface is separated from the second extrusion surface, the clamping piece is in a release position, and the first extrusion surface is in loose fit with the side surface of the cable; when the extrusion matching surface is abutted against the second extrusion surface, the clamping piece is in a contraction position, and the first extrusion surface is in tight fit with the side face of the cable.

In a preferred embodiment: the extrusion matching surface and the second extrusion surface are matched in an inclined plane; when the extrusion matching surface moves relative to the second extrusion surface along the direction of increased extrusion force, the clamping force between the first extrusion surface and the side surface of the cable is increased.

In a preferred embodiment: the clamping driving piece comprises a movable piece and a fixed piece; the fixing piece comprises an installation cavity, and one side of the installation cavity, which faces the end part of the cable, is an opening surface; the movable piece is provided with the extrusion matching surface;

the movable piece is movably arranged in the installation cavity and moves between a first position and a second position along the axial direction of the cable, and when the movable piece is located at the first position, the extrusion matching surface is separated from the second extrusion surface; when the movable piece moves from the first position to the second position, the extrusion matching surface is abutted against the second extrusion surface, and the extrusion force is gradually increased.

In a preferred embodiment: the outer side wall of the movable piece is movably connected with the inner side wall of the mounting cavity through threads.

In a preferred embodiment: the moving part runs through along the axial of cable and is provided with the chamber of stepping down, the inner wall in chamber of stepping down does the extrusion fitting surface.

In a preferred embodiment: the clamping piece comprises at least two clamping units;

the clamping holding unit is rotationally and symmetrically arranged around the axial direction of the cable and is provided with a first extrusion surface facing the side surface of the cable and a second extrusion surface far away from the side surface of the cable.

In a preferred embodiment: the clamping piece further comprises a base, the base is provided with a slot corresponding to the clamping unit, and one side of the clamping unit, facing the base, is provided with an insertion block.

In a preferred embodiment: one part of the holding and clamping unit is arranged in the yielding cavity, and the other part of the holding and clamping unit is arranged in the mounting cavity through the yielding cavity.

In a preferred embodiment: and one end of the fixing piece, which is far away from the opening surface, is provided with a mounting hole, and the ball head of the inhaul cable is arranged in the mounting hole and is in spacing fit with the fixing piece along the direction opposite to the entering direction of the inhaul cable.

In a preferred embodiment: the second extrusion surface is parallel to the side surface of the cable and is provided with saw teeth distributed at intervals.

Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:

1. the utility model provides a cable is embraced and is pressed from both sides structure, through embracing the motion of pressing from both sides the driving piece for embracing the folder, make the embrace that embraces between folder and the cable press from both sides power and increase gradually or reduce gradually, and embrace that press from both sides power and finally can increase to the broken pulling force that is greater than the cable, thereby realize firmly embracing the effect tightly with the cable, and also can be through quotation driving piece for embracing the activity of folder, let embrace the folder and disappear to embrace the folder power of embracing between folder and the cable, thereby realize embracing the separation of folder and cable, this kind is embraced and is pressed from both sides the structure and just can take off after the cable damages and continue the use, thereby reach.

2. The utility model provides a pair of cable is embraced and is pressed from both sides structure presss from both sides the unit mount with a plurality of independent armful through the base and is in the same place, has avoided embracing and has pressed from both sides the unit and scatter and lose, and a plurality of armful press from both sides the unit and form a whole installation that also is favorable to embracing more to press from both sides the unit simultaneously, increases the installation convenience.

Drawings

Fig. 1 is an exploded view of a cable clamp structure according to a preferred embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of a cable clamp structure according to a preferred embodiment of the present invention 1;

fig. 3 is an exploded view of a cable clamp structure according to the preferred embodiment of the present invention 2;

fig. 4 is a cross-sectional view of a cable clamp structure according to a preferred embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.

Example 1

Referring to fig. 1-2, the present embodiment provides a cable clamp structure, including: the cable clamping device comprises a cable 1, a clamping piece 2 and a clamping driving piece 3;

the clamping piece 2 is arranged outside the cable 1 along the radial direction of the cable 1; the clasping piece 2 is provided with a first pressing surface 211 facing the side of the cable 1 and a second pressing surface 212 far away from the side of the cable 1;

the clasping driving piece 3 is provided with a pressing and matching surface 321 matched with the second pressing surface 212; when the pressing matching surface 321 is separated from the second pressing surface 212, the clasping piece 2 is in a release position, and the first pressing surface 211 is loosely matched with the side surface of the cable 1; when the pressing fitting surface 321 is abutted to the second pressing surface 212, the clasping member 2 is in a contracted position, and the first pressing surface 211 is tightly fitted to the side surface of the cable 1.

Therefore, the clamping or releasing of the cable 1 by the clamping piece 2 can be realized by changing the relative positions of the clamping piece 2 and the clamping driving piece 3. When the cable is damaged, the clamping piece 2 and the cable 1 can be separated by changing the clamping piece 2 into the releasing state, so that the clamping piece 2 can be installed on a new cable 1 to realize the repeated use of the clamping structure.

In this embodiment, the second pressing surface 212 is parallel to the side surface of the cable 1 and has saw teeth distributed at intervals. Thus, the friction between the second pressing surface 212 and the cable 1 is relatively large, and the clamping force is further increased.

Specifically, the pressing engagement surface 321 and the second pressing surface 212 are inclined surfaces; when the pressing engagement surface 321 moves relative to the second pressing surface 212 in a direction in which the pressing force increases, the pinching force between the first pressing surface 211 and the side surface of the cable 1 increases. That is to say, the holding force between the holding member 2 and the cable 1 can be adjusted in this embodiment, and the holding force can be larger than the breaking force of the cable 1 by adjusting the size of the holding force, so that the holding member 2 cannot fall off from the cable before the cable 1 is broken, and the operation is very reliable.

In this embodiment, the clasping driving member 3 includes a movable member 32 and a fixed member 31; the fixing member 31 includes an installation cavity 311, and one side of the installation cavity 311 facing the end of the cable 1 is an open surface; the movable piece 32 is provided with the press fitting surface 321;

the movable piece 32 is movably installed in the installation cavity 311 and moves between a first position and a second position along the axial direction of the cable 1, and when the movable piece 32 is located at the first position, the pressing and matching surface 321 is separated from the second pressing surface 212; when the movable member 32 moves from the first position to the second position, the pressing engagement surface 321 and the second pressing surface 212 abut against each other, and the pressing force gradually increases. This realizes the relative movement between the movable member 32 and the clasping member 2, so that the pressing mating surface 321 and the second pressing surface 212 move relatively to change the pressing force, and thus the clasping force changes.

In order to realize the movement of the movable piece 32, the outer side wall of the movable piece 32 is movably connected with the inner side wall of the mounting cavity 311 through threads.

In order to install the clasping piece 2, the movable piece 32 is provided with an abdicating cavity 322 along the axial direction of the cable 1, and the inner wall of the abdicating cavity 322 is the pressing fitting surface 321.

In this embodiment, the clasping piece 2 includes two clasping units 21; the clamping unit is rotationally symmetrically arranged around the axial direction of the cable 1 and is provided with a first extrusion surface 211 facing the side surface of the cable 1 and a second extrusion surface 212 far away from the side surface of the cable 1. The number of the holding and clamping units 21 can be set arbitrarily according to the requirement, and the holding and clamping unit belongs to simple replacement of the embodiment.

One part of the clamping unit 21 is disposed in the avoiding cavity 322, and the other part is disposed in the mounting cavity 311 through the avoiding cavity 322.

Finally, one end of the fixing piece 31, which is far away from the opening surface, is provided with a mounting hole, and the ball head of the inhaul cable 4 is placed in the mounting hole and is in limit fit with the fixing piece 31 in the direction opposite to the entering direction of the inhaul cable.

Example 2

Referring to fig. 3 to 4, the present embodiment is different from embodiment 1 in that: the clasping piece 2 further comprises a base 22, the base 22 is provided with a slot 221 corresponding to the clasping unit 21, and one side of the clasping unit 21 facing the base is provided with an inserting block 213.

Through the insertion of the insertion block 213 and the insertion slot 221, the clasping unit 21 and the base 22 can be integrally installed, so that the clasping unit 21 is prevented from being scattered and lost, and the clasping member 2 is integrally formed, which is more favorable for increasing the convenience of installation.

Furthermore, one end of the insertion block 213, which is far away from the clasping unit 21, extends to both sides to form a limiting part 214; the base 22 has a limiting wall 222 engaged with the limiting portion 214, and when the insertion block 213 is inserted into the insertion slot 221, the limiting wall 222 and the limiting portion 214 are engaged in a limiting manner along a direction in which the insertion block 213 is separated from the insertion slot 221. This ensures that the clasping unit 21 can only be opened or closed along the fulcrum and will not fall off.

The above description is only an exemplary embodiment of the present invention, and the scope of the present invention should not be limited accordingly. The equivalent changes and modifications made according to the patent scope and the content of the specification of the present invention should still fall within the scope covered by the present invention.

Claims

1. The utility model provides a cable embraces and presss from both sides structure which characterized in that includes: the cable, the clamping piece and the clamping driving piece are connected with each other;

2. The cable clamp structure of claim 1, wherein: the extrusion matching surface and the second extrusion surface are matched in an inclined plane; when the extrusion matching surface moves relative to the second extrusion surface along the direction of increased extrusion force, the clamping force between the first extrusion surface and the side surface of the cable is increased.

3. The cable clamp structure of claim 2, wherein: the clamping driving piece comprises a movable piece and a fixed piece; the fixing piece comprises an installation cavity, and one side of the installation cavity, which faces the end part of the cable, is an opening surface; the movable piece is provided with the extrusion matching surface;

4. The cable clamp structure of claim 3, wherein: the outer side wall of the movable piece is movably connected with the inner side wall of the mounting cavity through threads.

5. The cable clamp structure of claim 4, wherein: the moving part runs through along the axial of cable and is provided with the chamber of stepping down, the inner wall in chamber of stepping down does the extrusion fitting surface.

6. The cable clamp structure of claim 5, wherein: the clamping piece comprises at least two clamping units;

7. The cable clamp structure of claim 6, wherein: the clamping piece further comprises a base, the base is provided with a slot corresponding to the clamping unit, and one side of the clamping unit, facing the base, is provided with an inserting block.

8. The cable clamp structure of claim 6, wherein: one part of the holding and clamping unit is arranged in the yielding cavity, and the other part of the holding and clamping unit is arranged in the mounting cavity through the yielding cavity.

9. The cable clamp structure of claim 3, wherein: and one end of the fixing piece, which is far away from the opening surface, is provided with a mounting hole, and the ball head of the inhaul cable is arranged in the mounting hole and is in spacing fit with the fixing piece along the direction opposite to the entering direction of the inhaul cable.

10. A cable clasping structure as claimed in any one of claims 1 to 9, wherein: the second extrusion surface is parallel to the side surface of the cable and is provided with saw teeth distributed at intervals.